Incubator.



'PATBNTED FEB. 5, 1907. W. F. MIKOLASEK.

INCUBATOR.

A PPLIGATION FILED MAY 19, 1906.

2 SHEETS-SHEET l.

NO. 842,899. PATENTED FEB. 5, 1907.

' W. F. MIKOLASEK.

INCUBATOR.

APPLICATION FILED MAY 19.1906.

2 SHEETS-SHEET '2.

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Win/Jams elf proved incubator is such as to preclude allpairs, satires )ATENT FTQ - lNC-UBATOR' Specification of Letters fatent.

Patented Feb. 5, 190?.

' Application filed May 19, 1906. Serial No, 317.658.

To all whom it may concern:

. Be it known that I, WEivoEsLAUs F. Mino- LAsnK, a citizen of the United States, residing at Vodnany, in the county of Bonhomme and State of South Dakota, have inventedcertain new and useful Improvements in Incubators, of which the following is a specification. 1

My invention contemplates certain new and useful improvements inincubators; and the object of the invention is to provide an apparatus of thischaracter in which the proper temperature may be automatically maintained by'the combination of devices adapted to control the temperature of water circulating in an advantageous manner within the incubator, and also designed to control air-vents to admit fresh air into the incubator whenever necessary.

The construction of the walls ofmy imair and moisture except as admitted through the proper channels, and the arrangement of automatic controlling devices is such that the lamp or other heating device for the wa- .ter is first automatically regulated if the predetermined temperature is exceeded, and

then if a diminution in the supply of heat is i not sufficient to cool'the incu ator to the proper degree air-vent-controlling devices are brought into play automatically to adrnit cool outside air into the incubator-cas- 1n". i

l or a full description of the invention and the merits thereof and also to acquire a knowledge of the details of construction of the means for. effecting the result. reference is to be had to the following description and accompanying drawings, in which Figure 1 is a longitudinal sectional view of my improved incubator, parts being shown in side elevation and other parts broken away. Fig. 2 is a horizontal sectional view through the casing, the interior and exterior parts being shown in top plan View. Fig. 3

is a detail View of the connection between the air-vent levers and their actuating-plate. Fig. 4 is a detail view, partially in side elevation and partially in section, of the outer end of one of said levers. Fig. 5 is a sectional view of a portion of the wall of the casing, illustrating the composite character thereof.

Corresponding and like'parts are referred to inthe following description and indicate-o in all the views of the drawings by the same reference characters.

Referring'to the drawings, the numeral 1 designates the box or casing of the incubator, preferably supported in an elevated position on legs, asshown, and provided with an'elevated egg-tray 2, underneath which is provided the space for the chicks. Within the center of the casing 1 and sus ended from theroof thereof'i's a depending anger 3, the lowermost laterally-extending arm .of which supports a thermostat 4 which in the pres ent instance is constituted by-three super posed disks designed to expand when the air is heated beyond the predetermineddegre e. To thc'thermostat 4 a vertically-extending rod 5 is secured, said rod passing through a sleeve 6, held in one arm of the bracket 3, having secured to its upper end a plate 7. To the plate 7 another vertical rod 8 is secured atits lower end, and said latter rod is guided in a sleeve 9, preferably secured'to and depending from the roof of the casing. 1. The rod 8 projects through the roof of the casing and 1s securedto a lever 10, which is fulcrumed upon a post 11", and is provided on one side of its fulcrum with a lon itudinally-adjustable counterbalance 12. n the other side of the fulcrum the lever 10 is connected with a downwardly-extending rod 13, attached to a tube 14, which is adapted to be moved vertically, so that its'lower end may be raised or lowered with respect to the burner of a lamp or similar heater 15, su

ported at one side of the casing by a suitab e bracket. The vertical movement of the tube 14 under the actuation of the lever 10 controls the heating of the tank or reservoir 16, it being obvious that when the tube 14 is elevated less heat will pass into the space surrounded by the reservoir 16, reducing the amount of heat supplied to the reservoir. JVhen, however, the tube 14 is lowered, the heat will be conveyed into the tube 145 and will heat the surrounding reservoir 16byradiation.-, The reservoir 16 is constituted by a double-wall drum surrounding the tube 14 andprovided with a Water-inlet 17 at its top and a water-outlet 18 at its bottom. Near its upper end the reservoir 16 is provided with outlets 20, which, as shown, are three in number in the present instance, and said inwardly extending outgoing portions 22' atterby reason of excessive pressure of. 5

ing thereby maintained.

reservoir is also provided underneath the outlets 20 with the same number of inlets 21.

V res ectively, to three circulating 0 The coils A and C are alike in shape and are,

intermediate coil B is, as s 24 and 25, respective y, joined together at their outer ends by a transversely-extending tical tube 26, extending into the top of the The pipes 26 pass through the to of the incubator and permit steam, whic magi be generated in the various-coils'A, .B,

the wateris heated it will be circulated out forwardly to a point about the middle of the side air from gaining access into the casing so long as the thimblc-valve 30 is seated.

The outlets 20,'a s best shown in Fig. 2, lead, coils A, B, an C, arranged near the roof the casing.

provided with outwardly, backwardly, and

and sub'stantifilly straight return portions 23, leading to the inlets 21, res ectively. The

liown, provided with straight outgoin and return portions connection. Each coil A, B, and C is provided ata point nearthe back of the casing 1 with an opening communicating with a ver- 7 C, to escape from said coils to the atmoshere, obviatinglikelihoodof damage to the steam generated therein. The height of the water in the reservoir 16 may be determined bythe gage '19, having a suitable glass. ,As

through the outlets 20 into the coils A, B, and (land back again through the inlets 21 in the reservoir, a continuous circulation be- 27 designatesthree levers, whichdiverge from the plate 7, one of said levers extending front of the casing 1, while the other two le- .vers extend laterally and slightly in a rear ward direction to oints in'the sides of the casing about two-t 'rd's of the distance from the front thereof. Each lever 27 is pivotallysus ended from a depending post 28 inter-s me iate of its ends, and each lever is provided atits inner end with a hook 29, having a loose. connection with the plate 7, and is provided at its other end with athimble-valve 30, designed to extend into the air-vent tube 3f -to closethe some. A ring32, secured to .tlilrl thimble 30, is spaced slightly therefrom, the space being designed to receive the end of the air-vent tube 31, and the rin 32 being designed to expand u on the outside of the said tube, so as to e ectually preclude out- The loose connection betweenthe hooks 29 and the plate 7 permits the latter to have a slight initial movement independent of the levers 27, as is manifest.

In the practical-operation of the apparatus the thermostat 4 will at a predetermined degree of temperature expand and'raise the rod 5 and late .7, which will at the same time raise t e rod 8 and rock the lever to operate the lieats'egulating device, which I character will effectually preclude the a diminution ofthe heat. 1f the initial op -eration'of the regulating deviceis not-sufiicient to cause a drop in thethermostat, the

airvents are brought into play by the continued u ward movement of the plate 7, which finally bring up against the upper side of the hooks 29 and cause the levers .27 to also rock. This Willresultin lifting the valves 30 away from the air-vent-pipes 31 and allow fresh air to flow intoithe casing 1.

In the preferred construction of my imstructed of-five layers. Behind the outside "proved incubator, the walls thereof are conboard a is arranged paper or similar material b. Back of this is a layer of wool c, then another layer of paper d, and finally the boards e. I have found that a wall of this passage of heat or air therethrough.

Having thus described the invention, what is claimed asnew is 1. In combinatiom an incubator embodying an incubating-compartment, means for heating said compartment, an initially-operable regulating mechanism for the heating means, and an auxiliary or emergency means for controlling the heating of the incubatingcompartment and operable at a predetermined time-subsequent to the actuation-of the initially-operating regulating mechanism.

2. In combination, an incubator embodying an incubating-compartment, means for" heating said compartment, an initially-operable regulating mechanism for the heating means, an auxiliary or emergency means for controlling the heating of the incubatingcompartment and operable at a predetermined time subsequent to the actuation of the initially-operating regulating mechanism, and means connecting the said auxiliary or emergency means for actuation by the first-mentioned regulating mechanism.

3.' In combination, an incubator embodying an incubatinghompartment, a regulator, thermostat means in the incubating-compartment connected withtheregulator for operation thereof, a plate connected with the thermostat'means aforesaid, air-vents for the incubating-compartment, valves for opening and closing, saidi-vents, and. levers connected with the-plate and the valves of the air-vents and operable after the initial operationof the regulator as s' ecified.

4. Incom'bination, an incu ator en1bodying an incubating-compartment, a heater. therefor, a thermostat in the incubatingco-mpartment, aregulator for the heater includmg a rod connected With'the thermo? stat, a-plate attached to said rod, aii' vents f'orthe incubating-chamber, valves for said ,vents, levers pivoted betweenthe ends there-- of and'each connected at oneend with avalve' of one of the air-vents, the opposite ends of I In testimony wh geof L afiix my signature tllle levers blinking alioosedeo rfmeetioin wlifh lathe in presence of two witnesses. I

ate attae e tot ero a oresai ,W ere y i $116 regulator is initially operable to control WENCESLAUS f MIKOLASEK' 5 the heating of the incubating-compartment .Witnesses:

and whereby the valves of the air-vents will E. A. BoUsK be operated subsequent to the regulator. FRED .G. BARDELL 

